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authorDmitry Baryshkov <dmitry.baryshkov@linaro.org>2021-09-26 02:43:33 +0300
committerLee Jones <lee.jones@linaro.org>2021-11-05 17:40:25 +0300
commitd3546ccdce4bc07fcf0648bfe865dbcd6d961afc (patch)
treebdaa763e571ed63301198f5df297dc898b6131ce /drivers/mfd
parentc5c7f0677107052060037583b9c8c15d818afb04 (diff)
downloadlinux-d3546ccdce4bc07fcf0648bfe865dbcd6d961afc.tar.xz
mfd: qcom-pm8xxx: switch away from using chained IRQ handlers
PM8xxx PMIC family uses GPIO as parent IRQ. Using it together with the irq_set_chained_handler_and_data() results in warnings from the GPIOLIB (see 461c1a7d4733 ("gpiolib: override irq_enable/disable")) as in this path the IRQ resources are not allocated (and thus the corresponding GPIO is not marked as used for the IRQ. Use request_irq so that the IRQ resources are proprely setup. [ 0.803271] ------------[ cut here ]------------ [ 0.803338] WARNING: CPU: 3 PID: 1 at drivers/gpio/gpiolib.c:3207 gpiochip_enable_irq+0xa4/0xa8 [ 0.803470] Modules linked in: [ 0.803542] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 5.14.0-rc6-next-20210820-postmarketos-qcom-apq8064+ #1 [ 0.803645] Hardware name: Generic DT based system [ 0.803710] Backtrace: [ 0.803777] [<c0e3493c>] (dump_backtrace) from [<c0e34d00>] (show_stack+0x20/0x24) [ 0.803911] r7:00000c87 r6:c07062dc r5:60000093 r4:c11d0f54 [ 0.803980] [<c0e34ce0>] (show_stack) from [<c0e38314>] (dump_stack_lvl+0x48/0x54) [ 0.804097] [<c0e382cc>] (dump_stack_lvl) from [<c0e38338>] (dump_stack+0x18/0x1c) [ 0.804217] r5:00000009 r4:c11fe208 [ 0.804274] [<c0e38320>] (dump_stack) from [<c03219c8>] (__warn+0xfc/0x114) [ 0.804387] [<c03218cc>] (__warn) from [<c0e35334>] (warn_slowpath_fmt+0x74/0xd0) [ 0.804509] r7:c07062dc r6:00000c87 r5:c11fe208 r4:00000000 [ 0.804577] [<c0e352c4>] (warn_slowpath_fmt) from [<c07062dc>] (gpiochip_enable_irq+0xa4/0xa8) [ 0.804716] r8:c27b6200 r7:c27aec00 r6:c27aec18 r5:cf77a448 r4:c02225f0 [ 0.804789] [<c0706238>] (gpiochip_enable_irq) from [<c0706348>] (gpiochip_irq_enable+0x28/0x38) [ 0.804921] r5:cf77a448 r4:c27aec18 [ 0.804977] [<c0706320>] (gpiochip_irq_enable) from [<c03897a0>] (irq_enable+0x48/0x78) [ 0.805111] r5:00000000 r4:c27aec00 [ 0.805167] [<c0389758>] (irq_enable) from [<c0389850>] (__irq_startup+0x80/0xbc) [ 0.805286] r5:00000000 r4:c27aec00 [ 0.805343] [<c03897d0>] (__irq_startup) from [<c038996c>] (irq_startup+0xe0/0x18c) [ 0.805468] r7:c27aec00 r6:00000001 r5:00000000 r4:c27aec00 [ 0.805535] [<c038988c>] (irq_startup) from [<c0389a54>] (irq_activate_and_startup+0x3c/0x74) [ 0.805669] r7:c27aec00 r6:00000001 r5:c27aec00 r4:00000000 [ 0.805736] [<c0389a18>] (irq_activate_and_startup) from [<c0389b58>] (__irq_do_set_handler+0xcc/0x1c0) [ 0.805875] r7:c27aec00 r6:c0383710 r5:c08a16b0 r4:00000001 [ 0.805943] [<c0389a8c>] (__irq_do_set_handler) from [<c0389d80>] (irq_set_chained_handler_and_data+0x60/0x98) [ 0.806087] r7:c27b5c10 r6:c27aed40 r5:c08a16b0 r4:c27aec00 [ 0.806154] [<c0389d20>] (irq_set_chained_handler_and_data) from [<c08a1660>] (pm8xxx_probe+0x1fc/0x24c) [ 0.806298] r6:0000003a r5:0000003a r4:c27b5c00 [ 0.806359] [<c08a1464>] (pm8xxx_probe) from [<c0871420>] (platform_probe+0x6c/0xc8) [ 0.806495] r10:c2507080 r9:e8bea2cc r8:c165e0e0 r7:c165e0e0 r6:c15f08f8 r5:c27b5c10 [ 0.806582] r4:00000000 [ 0.806632] [<c08713b4>] (platform_probe) from [<c086e280>] (really_probe+0xe8/0x460) [ 0.806769] r7:c165e0e0 r6:c15f08f8 r5:00000000 r4:c27b5c10 [ 0.806837] [<c086e198>] (really_probe) from [<c086e6a8>] (__driver_probe_device+0xb0/0x22c) [ 0.806975] r7:c27b5c10 r6:cf70fba4 r5:c15f08f8 r4:c27b5c10 [ 0.807042] [<c086e5f8>] (__driver_probe_device) from [<c086e868>] (driver_probe_device+0x44/0xe0) [ 0.807188] r9:e8bea2cc r8:00000000 r7:c27b5c10 r6:cf70fba4 r5:c16ae4b4 r4:c16ae4b0 [ 0.807271] [<c086e824>] (driver_probe_device) from [<c086ecd8>] (__device_attach_driver+0xb4/0x12c) [ 0.807421] r9:e8bea2cc r8:c15eec08 r7:c27b5c10 r6:cf70fba4 r5:c15f08f8 r4:00000001 [ 0.807506] [<c086ec24>] (__device_attach_driver) from [<c086c06c>] (bus_for_each_drv+0x94/0xe4) [ 0.807651] r7:c16ae484 r6:c086ec24 r5:cf70fba4 r4:00000000 [ 0.807718] [<c086bfd8>] (bus_for_each_drv) from [<c086e0e0>] (__device_attach+0x104/0x19c) [ 0.807852] r6:00000001 r5:c27b5c54 r4:c27b5c10 [ 0.807913] [<c086dfdc>] (__device_attach) from [<c086eef4>] (device_initial_probe+0x1c/0x20) [ 0.808050] r6:c27b5c10 r5:c15ef1b0 r4:c27b5c10 [ 0.808111] [<c086eed8>] (device_initial_probe) from [<c086d00c>] (bus_probe_device+0x94/0x9c) [ 0.808240] [<c086cf78>] (bus_probe_device) from [<c086a60c>] (device_add+0x404/0x8f4) [ 0.808370] r7:c16ae484 r6:c251ba10 r5:00000000 r4:c27b5c10 [ 0.808439] [<c086a208>] (device_add) from [<c0a82f50>] (of_device_add+0x44/0x4c) [ 0.808581] r10:c144c854 r9:00000001 r8:e8bea314 r7:c251ba10 r6:00000000 r5:00000000 [ 0.808669] r4:c27b5c00 [ 0.808718] [<c0a82f0c>] (of_device_add) from [<c0a836cc>] (of_platform_device_create_pdata+0xa0/0xc8) [ 0.808850] [<c0a8362c>] (of_platform_device_create_pdata) from [<c0a83908>] (of_platform_bus_create+0x1f0/0x514) [ 0.809005] r9:00000001 r8:c251ba10 r7:00000000 r6:00000000 r5:00000000 r4:e8bea2b0 [ 0.809086] [<c0a83718>] (of_platform_bus_create) from [<c0a83e04>] (of_platform_populate+0x98/0x128) [ 0.809233] r10:c144c854 r9:00000001 r8:c251ba10 r7:00000000 r6:00000000 r5:e8bea170 [ 0.809321] r4:e8bea2b0 [ 0.809371] [<c0a83d6c>] (of_platform_populate) from [<c0a83f20>] (devm_of_platform_populate+0x60/0xa8) [ 0.809521] r9:0000011d r8:c165e0e0 r7:e8bea170 r6:c2c34f40 r5:c2cac140 r4:c251ba10 [ 0.809604] [<c0a83ec0>] (devm_of_platform_populate) from [<c08a212c>] (ssbi_probe+0x138/0x16c) [ 0.809738] r6:c2c34f40 r5:c251ba10 r4:ff822700 [ 0.809800] [<c08a1ff4>] (ssbi_probe) from [<c0871420>] (platform_probe+0x6c/0xc8) [ 0.809923] r7:c165e0e0 r6:c15f0a80 r5:c251ba10 r4:00000000 [ 0.809989] [<c08713b4>] (platform_probe) from [<c086e280>] (really_probe+0xe8/0x460) [ 0.810120] r7:c165e0e0 r6:c15f0a80 r5:00000000 r4:c251ba10 [ 0.810187] [<c086e198>] (really_probe) from [<c086e6a8>] (__driver_probe_device+0xb0/0x22c) [ 0.810325] r7:c251ba10 r6:c15f0a80 r5:c15f0a80 r4:c251ba10 [ 0.810393] [<c086e5f8>] (__driver_probe_device) from [<c086e868>] (driver_probe_device+0x44/0xe0) [ 0.810539] r9:0000011d r8:00000000 r7:c251ba10 r6:c15f0a80 r5:c16ae4b4 r4:c16ae4b0 [ 0.810623] [<c086e824>] (driver_probe_device) from [<c086ee2c>] (__driver_attach+0xdc/0x188) [ 0.810766] r9:0000011d r8:c144c834 r7:00000000 r6:c15f0a80 r5:c251ba10 r4:00000000 [ 0.810849] [<c086ed50>] (__driver_attach) from [<c086bf60>] (bus_for_each_dev+0x88/0xd4) [ 0.810985] r7:00000000 r6:c086ed50 r5:c15f0a80 r4:00000000 [ 0.811052] [<c086bed8>] (bus_for_each_dev) from [<c086dad4>] (driver_attach+0x2c/0x30) [ 0.811182] r6:c15ef1b0 r5:c2c34e80 r4:c15f0a80 [ 0.811243] [<c086daa8>] (driver_attach) from [<c086d2dc>] (bus_add_driver+0x180/0x21c) [ 0.811364] [<c086d15c>] (bus_add_driver) from [<c086fa6c>] (driver_register+0x84/0x118) [ 0.811492] r7:00000000 r6:ffffe000 r5:c1428210 r4:c15f0a80 [ 0.811558] [<c086f9e8>] (driver_register) from [<c0871174>] (__platform_driver_register+0x2c/0x34) [ 0.811683] r5:c1428210 r4:c16524a0 [ 0.811739] [<c0871148>] (__platform_driver_register) from [<c1428234>] (ssbi_driver_init+0x24/0x28) [ 0.811868] [<c1428210>] (ssbi_driver_init) from [<c0302394>] (do_one_initcall+0x68/0x2c8) [ 0.811990] [<c030232c>] (do_one_initcall) from [<c140147c>] (kernel_init_freeable+0x1dc/0x23c) [ 0.812135] r7:cf7b0400 r6:c130339c r5:00000007 r4:c147f6a0 [ 0.812204] [<c14012a0>] (kernel_init_freeable) from [<c0e40e60>] (kernel_init+0x20/0x138) [ 0.812345] r10:00000000 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:c0e40e40 [ 0.812433] r4:00000000 [ 0.812483] [<c0e40e40>] (kernel_init) from [<c0300150>] (ret_from_fork+0x14/0x24) [ 0.812596] Exception stack(0xcf70ffb0 to 0xcf70fff8) [ 0.812684] ffa0: 00000000 00000000 00000000 00000000 [ 0.812809] ffc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000 [ 0.812923] ffe0: 00000000 00000000 00000000 00000000 00000013 00000000 [ 0.813008] r5:c0e40e40 r4:00000000 [ 0.813075] ---[ end trace ad2443eee078d094 ]--- Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: David Heidelberg <david@ixit.cz> # on Nexus 7 (deb) Signed-off-by: Lee Jones <lee.jones@linaro.org> Link: https://lore.kernel.org/r/20210925234333.2430755-1-dmitry.baryshkov@linaro.org
Diffstat (limited to 'drivers/mfd')
-rw-r--r--drivers/mfd/qcom-pm8xxx.c39
1 files changed, 16 insertions, 23 deletions
diff --git a/drivers/mfd/qcom-pm8xxx.c b/drivers/mfd/qcom-pm8xxx.c
index ec18a04de355..2f2734ba5273 100644
--- a/drivers/mfd/qcom-pm8xxx.c
+++ b/drivers/mfd/qcom-pm8xxx.c
@@ -65,7 +65,7 @@
struct pm_irq_data {
int num_irqs;
struct irq_chip *irq_chip;
- void (*irq_handler)(struct irq_desc *desc);
+ irq_handler_t irq_handler;
};
struct pm_irq_chip {
@@ -169,19 +169,16 @@ static int pm8xxx_irq_master_handler(struct pm_irq_chip *chip, int master)
return ret;
}
-static void pm8xxx_irq_handler(struct irq_desc *desc)
+static irqreturn_t pm8xxx_irq_handler(int irq, void *data)
{
- struct pm_irq_chip *chip = irq_desc_get_handler_data(desc);
- struct irq_chip *irq_chip = irq_desc_get_chip(desc);
+ struct pm_irq_chip *chip = data;
unsigned int root;
int i, ret, masters = 0;
- chained_irq_enter(irq_chip, desc);
-
ret = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_ROOT, &root);
if (ret) {
pr_err("Can't read root status ret=%d\n", ret);
- return;
+ return IRQ_NONE;
}
/* on pm8xxx series masters start from bit 1 of the root */
@@ -192,7 +189,7 @@ static void pm8xxx_irq_handler(struct irq_desc *desc)
if (masters & (1 << i))
pm8xxx_irq_master_handler(chip, i);
- chained_irq_exit(irq_chip, desc);
+ return IRQ_HANDLED;
}
static void pm8821_irq_block_handler(struct pm_irq_chip *chip,
@@ -230,19 +227,17 @@ static inline void pm8821_irq_master_handler(struct pm_irq_chip *chip,
pm8821_irq_block_handler(chip, master, block);
}
-static void pm8821_irq_handler(struct irq_desc *desc)
+static irqreturn_t pm8821_irq_handler(int irq, void *data)
{
- struct pm_irq_chip *chip = irq_desc_get_handler_data(desc);
- struct irq_chip *irq_chip = irq_desc_get_chip(desc);
+ struct pm_irq_chip *chip = data;
unsigned int master;
int ret;
- chained_irq_enter(irq_chip, desc);
ret = regmap_read(chip->regmap,
PM8821_SSBI_REG_ADDR_IRQ_MASTER0, &master);
if (ret) {
pr_err("Failed to read master 0 ret=%d\n", ret);
- goto done;
+ return IRQ_NONE;
}
/* bits 1 through 7 marks the first 7 blocks in master 0 */
@@ -251,19 +246,18 @@ static void pm8821_irq_handler(struct irq_desc *desc)
/* bit 0 marks if master 1 contains any bits */
if (!(master & BIT(0)))
- goto done;
+ return IRQ_NONE;
ret = regmap_read(chip->regmap,
PM8821_SSBI_REG_ADDR_IRQ_MASTER1, &master);
if (ret) {
pr_err("Failed to read master 1 ret=%d\n", ret);
- goto done;
+ return IRQ_NONE;
}
pm8821_irq_master_handler(chip, 1, master);
-done:
- chained_irq_exit(irq_chip, desc);
+ return IRQ_HANDLED;
}
static void pm8xxx_irq_mask_ack(struct irq_data *d)
@@ -574,14 +568,15 @@ static int pm8xxx_probe(struct platform_device *pdev)
if (!chip->irqdomain)
return -ENODEV;
- irq_set_chained_handler_and_data(irq, data->irq_handler, chip);
+ rc = devm_request_irq(&pdev->dev, irq, data->irq_handler, 0, dev_name(&pdev->dev), chip);
+ if (rc)
+ return rc;
+
irq_set_irq_wake(irq, 1);
rc = of_platform_populate(pdev->dev.of_node, NULL, NULL, &pdev->dev);
- if (rc) {
- irq_set_chained_handler_and_data(irq, NULL, NULL);
+ if (rc)
irq_domain_remove(chip->irqdomain);
- }
return rc;
}
@@ -594,11 +589,9 @@ static int pm8xxx_remove_child(struct device *dev, void *unused)
static int pm8xxx_remove(struct platform_device *pdev)
{
- int irq = platform_get_irq(pdev, 0);
struct pm_irq_chip *chip = platform_get_drvdata(pdev);
device_for_each_child(&pdev->dev, NULL, pm8xxx_remove_child);
- irq_set_chained_handler_and_data(irq, NULL, NULL);
irq_domain_remove(chip->irqdomain);
return 0;